The 432 MHz G/Ta Table is a compilation of simulations of 4-Yagi-Bays at 432.1 MHz. The main purpose of this table is to enable you to select a
Yagi design by its performance level for non-terrestrial weak signal work such as EME. Thus the G/T number presented is computed for an elevation
of the array of 30 degrees as a typical position of the moon. Some theoretical details about G/Ta and G/T-System can be found here

This is the 2nd Interactive G/Ta Chart VE7BQH: "Tsky and Tearth is now Interactive or changeable by the user."
Preset Tsky and Tearth have changed and now are acc. ITU recommendations P.372-13, Radio Noise.
He thanks Vladimir, UR5EAZ for coming up with the idea and developing the actual MS Excel ®.

Interactivity is not available online, sry.

Recommendated average numbers for man-made noise
on 432 MHz

Rural = 4.1 dB or

458

K

Residential = 8.5 dB or

1794

K

Enter Tsky >

27

K

Enter T_earth, K >

458,00

K

1Ant.

4
Antennas

1 Ant.

4 Ant.

<

H Plane

>

KF2YN

TYPE OF

L

GAIN

E

H

Ga

Tlos

Ta

F/R

1st SL

2nd SL

Z

VSWR

Ant G/T

Feed

Convergence

ANTENNA

λ

(dBi)

(M)

(M)

(dBi)

(K)

(K)

(dB)

(dB)

(dB)

(ohms)

Bandwidth

(dB)

System

Correction req.

"S"

KF2YN Boxkite4

0,44

13,24

1,20

0,85

19,30

4,93

68,47

26,1

21,5

none

52,5

1.10:1

0,94

Bent Dipole

Yes

30,61878

KF2YN
Boxkite 7

1,34

15,64

1,40

1,17

21,56

8,14

53,63

27,6

27,5

21,3

51,7

1.05:1

4,27

Bent Dipole

Yes

16,23375

DG7YBN
GTV70-8n

1,84

13,60

1,07

0,93

19,56

4,90

53,99

24,8

16,5

21,7

49,8

1.83:1

2,24

Bent Dipole

Yes

18,67717

KF2YN
Boxkite 10

2,37

16,55

1,50

1,30

22,46

8,73

48,29

28,3

19,2

28,0

48,7

1.08:1

5,62

Bent Dipole

Yes

11,3837

InnoV 10
LFA

2,43

14,43

1,12

1,03

20,36

3,67

47,23

23,8

17,2

23,3

50,7

1.13:1

3,62

LFA-LOOP

Yes

13,9363

YU7EF
EF7010-5

2,59

14,64

1,14

1,05

20,56

5,00

47,68

22,5

16,9

24,1

50,0

1.06:1

3,78

Dipole

No

13,40379

+DG7YBN
GTV 70-11w

2,81

14,97

1,18

1,09

20,90

2,70

42,89

27,8

15,9

23,4

50,0

1.06:1

4,58

Bent Dipole

No

11,03595

YU7EF
EF7011B-5

2,87

15,07

1,20

1,11

21,00

4,70

46,60

25,4

16,9

20,1

49,0

1.56:1

4,32

Dipole

No

12,7113641

Innov 11
LFA

2,87

15,05

1,20

1,10

20,98

3,95

43,74

25,6

16,4

23,8

50,4

1.07:1

4,57

LFA-LOOP

Yes

10,8706855

*Innov 11
LFA

2,87

15,05

1,19

1,10

20,96

3,95

43,61

25,6

16,4

23,8

50,4

1.07:1

4,56

LFA-LOOP

Yes

10,7631809

EAntenna
432LFA11

2,94

15,09

1,20

1,11

21,02

3,93

44,23

25,4

17,0

24,9

47,9

1.28:1

4,56

LFA-LOOP

Yes

11,2871696

*KF2YN
Polly 12 CR

3,17

15,70

1,30

1,30

21,74

3,19

42,05

25,4

16,1

22,1

48,3

1.17:1

5,50

Multi-Pol loop

No

10,0067292

InnoV 12
LFA

3,29

15,48

1,24

1,16

21,40

3,95

40,38

28,3

16,8

23,3

50,1

1.07:1

5,34

LFA-LOOP

Yes

8,10781704

*InnoV 12
LFA

3,29

15,48

1,23

1,15

21,37

4,00

40,12

28,3

16,8

23,3

50,1

1.07:1

5,34

LFA-LOOP

Yes

7,85619335

YU7EF
EF7012B-5

3,30

15,58

1,26

1,17

21,50

4,90

42,88

24,0

17,6

21,3

48,6

1.40:1

5,18

Dipole

No

9,50579208

EAntenna
432LFA12

3,31

15,32

1,23

1,14

21,24

4,32

42,91

28,6

16,1

24,5

50,1

1.45:1

4,91

LFA-LOOP

Yes

9,93190019

KF2YN
Boxkite 13

3,37

17,38

1,63

1,50

23,30

9,28

49,80

28,0

18,0

29,0

50,9

1.09:1

6,33

Bent Dipole

Yes

12,271142

Innov 13
LFA

3,72

15,92

1,31

1,23

21,85

4,50

39,85

29,5

16,5

23,2

50,1

1.15:1

5,85

LFA-LOOP

Yes

7,28560884

*InnoV 13
LFA

3,72

15,92

1,30

1,22

21,83

4,50

39,72

29,5

16,5

23,2

50,1

1.15:1

5,84

LFA-LOOP

Yes

7,17790308

YU7EF
EF7013M-6

3,83

16,11

1,33

1,25

22,01

4,70

42,42

26,4

18,7

21,8

49,4

1.06:1

5,73

Dipole

No

9,26243923

M2
432-12EME

3,98

16,22

1,39

1,32

22,11

3,92

52,60

19,7

12,3

16,0

200,4

1.49:1

4,90

Folded Dipole

Yes

18,1868704

*M2
432-12EME

3,98

16,22

1,42

1,37

22,17

3,92

53,13

19,7

12,3

16,0

200,4

1.49:1

4,92

Folded Dipole

Yes

18,6168449

F9FT 19

4,02

15,96

1,33

1,26

21,88

6,07

50,06

21,5

14,1

17,5

55,7

1.14:1

4,89

Folded Dipole

Yes

14,6443047

DG7YBN
Tonna 19 mod

4,02

16,17

1,35

1,27

22,07

6,07

42,78

22,4

14,3

18,7

44,7

1.15:1

5,76

Folded Dipole

Yes

8,61311175

InnoV 14
LFA

4,03

16,46

1,38

1,32

22,31

4,50

39,71

30,8

16,0

22,3

52,6

1.14:1

6,32

LFA-LOOP

Yes

7,1671325

*InnoV 14
LFA

4,03

16,46

1,36

1,29

22,26

4,50

39,46

30,6

16,0

22,3

52,6

1.14:1

6,30

LFA-LOOP

Yes

6,96249156

+DG7YBN
GTV70-14

4,06

16,38

1,38

1,31

22,31

3,80

41,13

26,9

15,9

20,6

49,4

1.51:1

6,17

Bent Dipole

No

8,824192

YU7EF
EF7014M-6

4,24

16,50

1,39

1,32

22,39

4,50

43,00

23,8

17,9

20,5

49,5

1.11:1

6,06

Dipole

No

9,88131762

RA3AQ
AQ70-14f

4,30

16,63

1,41

1,34

22,54

6,94

42,65

26,1

15,9

20,0

52,8

1.09:1

6,24

Folded Dipole

Yes

7,90554636

KF2YN
Boxkite 16

4,37

18,02

1,74

1,61

23,85

10,17

51,70

27,4

17,0

25,0

49,1

1.06:1

6,71

Bent Dipole

Yes

13,2747285

*KF2YN
Polly 15 CR

4,44

16,76

1,40

1,40

22,66

3,50

39,25

26,7

16,3

20,3

47,4

1.21:1

6,72

Multi-pol loop

No

7,49259041

I0JXX
16JXX70 old ver

4,46

16,53

1,41

1,33

22,44

4,86

43,25

23,4

16,6

21,3

201,8

1.05:1

6,08

T Match

Yes

9,83450566

I0JXX
32JXX70 XPOL H new ver

4,46

16,28

1,37

1,37

22,17

5,94

53,91

18,6

15,0

18,0

206,6

1.03:1

4,85

T Match

Yes

17,9239981

I0JXX
32JXX70 XPOL V new ver

4,46

16,28

1,37

1,37

22,18

4,38

53,38

18,6

15,0

18,0

206,6

1.03:1

4,91

T Match

Yes

18,5207955

EAntenna
432LFA15

4,58

15,66

1,22

1,14

21,36

4,03

36,85

29,2

26,2

29,1

48,4

1.25:1

5,70

LFA-LOOP

Yes

5,13942768

InnoV 15
LFA

4,59

16,68

1,42

1,34

22,57

4,77

38,54

31,1

15,8

22,1

51,1

1.08:1

6,71

LFA-LOOP

Yes

6,01638699

YU7EF
EF7015M-5

4,69

16,80

1,43

1,36

22,66

5,40

43,12

24,3

19,0

21,1

49,5

1.03:1

6,31

Dipole

No

9,36048988

Konni F20

4,77

16,69

1,44

1,36

22,61

1,74

41,56

21,9

14,0

16,4

210,7

1.06:1

6,42

Folded Dipole

Yes

10,6159272

WiMo 15
(YU7EF)

4,89

17,06

1,46

1,30

22,87

4,30

38,75

22,3

17,2

20,8

174,5

3.05:1

6,99

Folded Dipole

Yes

6,51720414

InnoV 16
LFA

5,19

17,27

1,50

1,43

23,15

4,77

38,17

29,3

18,1

23,3

48,4

1.19:1

7,33

LFA-LOOP

Yes

5,70375393

+DG7YBN
GTV70-17w

5,23

17,29

1,51

1,44

23,20

3,00

38,35

31,5

14,7

20,8

49,9

1.03:1

7,36

Bent Dipole

No

7,10602

InnoV 17
LFA

5,33

17,25

1,49

1,42

23,11

4,28

38,23

27,4

18,1

23,5

49,9

1.03:1

7,29

LFA-LOOP

Yes

6,1057206

*InnoV 17
LFA

5,33

17,25

1,45

1,45

23,11

4,28

38,10

27,4

18,1

23,5

49,9

1.03:1

7,30

LFA-LOOP

Yes

5,9980953

YU7EF
EF7017M-5

5,56

17,41

1,52

1,44

23,22

5,60

42,80

25,0

18,5

22,3

50,7

1.06:1

6,91

Dipole

No

8,95673043

*KF2YN
Polly 18 CR

5,69

17,79

1,95

1,95

23,96

3,70

40,76

28,3

14,8

20,0

48,1

1.18:1

7,86

Multi-Pol loop

No

8,5915183

RA3AQ
AQ70-18f

5,74

17,76

1,59

1,53

23,64

6,08

41,63

27,2

16,1

20,5

51,7

1.08:1

7,45

Folded Dipole

Yes

7,65083486

InnoV 18
LFA

5,76

17,49

1,52

1,45

23,33

4,28

37,33

28,2

18,5

24,8

49,8

1.05:1

7,61

LFA-LOOP

Yes

5,36310603

+DG7YBN
GTV70-19

5,93

17,80

1,60

1,54

23,68

3,60

38,31

29,6

15,4

20,2

49,3

1.28:1

7,85

Bent Dipole

No

6,64593903

+Konni
F20 Mod YBN

5,94

17,52

1,58

1,51

23,39

1,47

41,83

23,2

14,3

16,0

220,4

1.07:1

7,18

Folded Dipole

Yes

11,0203618

YU7EF
EF7018M-5

6,00

17,61

1,54

1,48

23,39

5,10

40,73

26,4

17,7

22,6

49,3

1.08:1

7,29

Dipole

No

7,59122621

K1FO 22

6,10

17,85

1,63

1,56

23,75

4,75

43,28

20,6

15,4

21,2

200,8

1.34:1

7,39

T Match

Yes

9,93766657

EAntenna
432LFA18

6,13

17,88

1,61

1,55

23,76

5,60

38,01

30,4

16,0

26,2

47,6

1.42:1

7,96

LFA-LOOP

Yes

4,9891648

YU7EF
EF7019B-5

6,43

17,91

1,60

1,54

23,72

5,70

41,86

25,7

17,8

23,4

50,5

1.12:1

7,50

Dipole

No

8,102984

KF2YN
Polly 20 CR

6,50

18,30

1,90

1,90

24,43

3,80

40,34

28,7

14,4

19,5

48,8

1.21:1

8,37

Multi-Pol loop

No

8,17459279

InnoV 19
LFA

6,54

18,18

1,68

1,63

24,10

5,02

37,48

34,3

15,0

20,1

47,6

1.09:1

8,36

LFA-LOOP

Yes

4,95861148

Tonna 21
DX

6,61

17,91

1,67

1,61

23,80

6,65

52,86

20,5

14,5

18,2

58,4

2.32:1

6,57

Folded Dipole

Yes

16,5856299

KF2YN
Boxkite 22

6,70

19,26

1,99

1,90

25,14

10,75

50,20

29,0

16,2

21,2

52,1

1.17:1

8,13

Bent Dipole

Yes

11,6251452

InnoV 20
LFA

6,99

18,28

1,73

1,67

24,31

5,02

36,07

35,2

15,1

20,7

50,5

1.09:1

8,74

LFA-LOOP

Yes

3,79333538

+YU7XL
QY721104D14

7,04

18,42

1,88

1,82

24,47

3,40

35,36

27,7

18,5

22,8

201,1

1.28:1

8,98

LFA 200 Ώ

Yes

4,36850168

RA3AQ
AQ70-21f

7,14

18,54

1,73

1,67

24,41

6,94

39,21

27,9

16,8

21,3

52,3

1.07:1

8,48

Folded Dipole

Yes

5,03855585

BVO70-7.2
WL modified

7,16

18,49

1,76

1,70

24,42

3,80

42,69

22,6

14,9

19,1

49,5

1.06:1

8,12

Dipole

No

10,1086883

Directive
DSEFO432-25

7,39

18,57

1,74

1,69

24,47

5,09

39,86

25,4

15,9

20,5

198,2

1.38:1

8,46

T Match

Yes

6,87759858

*Directive DSEFO432-25

7,39

18,57

1,78

1,68

24,47

4,90

39,68

25,4

15,9

20,5

198,2

1.38:1

8,48

T Match

Yes

6,86341689

Directive
DSEFO432-25XPOL H

7,39

18,57

1,73

1,73

24,48

5,11

39,75

25,4

15,9

20,5

198,2

1.38:1

8,49

T Match

Yes

6,77231318

Directive
DSEFO432-25XPOL V

7,39

18,57

1,73

1,73

24,48

5,40

39,88

25,4

15,9

20,5

198,2

!.38:1

8,47

T Match

Yes

6,6812241

+DG7YBN
GTV70-23

7,55

18,65

1,76

1,70

24,51

3,80

36,03

32,3

15,7

21,8

48,4

1.56:1

8,94

Bent Dipole

Yes

4,62875098

YU7EF
EF7021B-5

7,59

18,66

1,74

1,68

24,50

7,80

40,72

29,6

20,3

21,7

50,2

1.33:1

8,40

Dipole

No

5,69410539

I0JXX
25JXX70

7,91

18,53

1,74

1,68

24,41

5,61

41,85

23,9

21,3

24,8

198,6

1.12:1

8,19

T Match

Yes

8,15813045

KF2YN
Polly 24 CR

8,15

19,15

1,90

1,90

25,11

3,70

40,24

29,5

13,1

19,1

51,8

1.14:1

9,06

Multi-Pol loop

No

8,16186559

+YU7XL
QY724104D17

8,35

19,01

2,00

1,90

24,99

3,40

35,23

31,7

18,7

22,8

199,0

1.23:1

9,52

LFA 200 Ώ

Yes

4,26119822

+DG7YBN
GTV70-25

8,39

18,97

1,80

1,74

24,84

3,20

34,38

32,6

16,3

22,1

41,2

1.25;1

9,48

Bent Dipole

No

3,70288375

InnoV 23 LFA

8,40

19,16

1,87

1,82

25,08

5,59

35,95

31,8

15,9

21,7

45,2

1.23:1

9,52

LFA-LOOP

Yes

3,29063402

*InnoV 23
LFA

8,40

19,16

1,89

1,85

25,06

5,59

35,95

31,8

15,9

21,7

45,2

1.23:1

9,50

LFA-LOOP

Yes

3,29063402

DJ9BV
BVO70-8.5wl

8,43

19,14

1,95

1,90

25,13

5,00

47,81

24,3

14,9

17,8

203,9

1.45:1

8,33

Folded Dipole

Yes

13,5116783

DJ9BV
OPT70-8.5wl

8,44

19,04

1,80

1,75

24,87

4,88

43,66

23,2

15,8

20,1

186,1

1.56:1

8,47

Folded Dipole

Yes

10,1608523

EAntenna
432LFA23

8,44

18,96

1,90

1,84

24,89

8,05

37,16

32,0

14,2

30,9

47,8

3.99:1

9,19

LFA-LOOP

Yes

2,5480787

YU7EF
EF7023B-5

8,47

18,98

1,79

1,73

24,78

6,39

38,34

30,5

19,6

21,9

48,6

1.21:1

8,94

Dipole

No

4,70329434

RA3AQ
AQ70-24f

8,52

19,22

1,87

1,82

24,82

6,07

36,89

30,0

15,1

21,0

52,0

1.13:1

9,15

Folded Dipole

Yes

3,72968621

InnoV 24
LFA

8,89

19,32

1,92

1,87

25,25

5,87

35,68

33,4

15,3

22,1

46,4

1.19:1

9,73

LFA-LOOP

Yes

2,87100287

*InnoV 24
LFA

8,89

19,32

1,89

1,84

25,22

5,87

35,55

33,4

15,3

22,1

46,4

1.19:1

9,71

LFA-LOOP

Yes

2,76279607

YU7EF
EF7024B-5

8,90

19,19

1,84

1,79

25,02

7,50

39,63

30,3

20,5

22,4

50,1

1.60:1

9,04

Dipole

No

4,99762034

M2
432-9WLA

9,19

19,40

2,02

1,96

25,33

7,22

54,37

23,2

15,8

18,1

167,2

2.09:1

7,98

Folded Dipole

Yes

17,4586332

*M2
432-9WLA

9,19

19,40

1,83

1,88

25,23

6,98

50,09

23,2

15,8

18,1

167,2

2.09:1

8,23

Folded Dipole

Yes

14,0589632

+YU7XL
QY728107D21

10,01

19,64

2,22

2,06

25,65

3,40

35,36

28,6

19,1

24,1

198,1

1.29:1

10,16

LFA 200

Yes

4,36850168

YU7EF
EF7027B-5

10,18

19,67

1,94

1,89

25,47

7,80

40,59

25,6

20,0

23,2

50,3

1.64:1

9,39

Dipole

No

5,58519274

Hy-Gain
UB-7031DX

10,42

19,54

1,92

1,86

25,33

5,24

42,54

26,2

18,3

21,1

199,5

1.26:1

9,04

T Match

Yes

8,99223785

WiMo 27
(YU7EF)

10,43

19,43

1,85

1,80

25,08

4,30

35,42

27,1

20,5

22,6

191,8

2.72:1

9,59

Folded Dipole

Yes

3,77257249

+DG7TYBN
GTV70-30

10,49

19,74

1,94

1,89

25,58

3,90

33,65

32,9

18,9

26,0

42,5

1.276:1

10,31

Bent Dipole

No

2,59810428

K1FO 33

10,61

20,03

2,08

2,04

25,95

6,13

40,53

22,0

15,5

22,2

200,5

1.19:1

9,87

T Match

Yes

6,70486231

Directive
DSEFO432-33

10,61

20,03

2,08

2,04

25,95

6,13

40,53

22,0

15,5

22,2

200,5

1.19:1

9,87

T Match

Yes

6,70486231

RA3AQ
AQ70-30f

11,39

20,33

2,08

2,04

26,08

5,53

35,38

30,6

16,8

22,1

51,6

1.10:1

10,59

Folded Dipole

Yes

2,86172189

InnoV 30 LFA

11,64

20,45

2,27

2,22

26,42

6,67

38,83

36,6

13,9

20,3

49,6

2.38:1

10,53

LFA-LOOP

Yes

4,91460828

*YU7EF
EF7032-5

12,49

19,97

1,94

1,90

25,59

6,60

37,94

27,7

23,1

24,2

51,3

3.44:1

9,80

Dipole

No

4,22170001

InnoV 33
LFA

13,03

20,85

2,32

2,29

26,81

5,33

36,86

36,6

13,3

19,2

50,1

1.17:1

11,14

LFA-LOOP

Yes

4,23088225

DJ9BV
OPT70-13wl

13,29

20,85

2,35

2,29

26,80

5,15

42,99

25,9

14,8

19,7

183,0

1.44:1

10,47

Folded Dipole

Yes

9,42220948

M2
432-13WLA

13,29

20,81

2,32

2,28

26,69

7,16

53,68

22,4

19,2

20,9

199,9

2.35:1

9,39

Folded Dipole

Yes

16,9260525

*M2
432-13WLA

13,29

20,81

2,08

2,08

26,40

7,77

56,36

22,4

19,2

20,9

199,9

2.35:1

8,89

Folded Dipole

Yes

18,7579102

I0JXX
39JXX70

13,53

20,16

2,00

1,97

25,86

6,30

39,28

26,1

26,7

27,0

194,0

1.19:1

9,92

T Match

Yes

5,54736955

InnoV 34
LFA

13,54

20,89

2,46

2,43

26,87

7,47

39,94

37,0

12,7

17,9

49,4

3.05:1

10,86

LFA-LOOP

Yes

5,27621473

InnoV 35
LFA

14,00

20,95

2,46

2,43

26,93

7,46

39,68

36,7

12,7

18,1

49,1

2.69:1

10,94

LFA-LOOP

Yes

5,06808734

InnoV 38
LFA

15,41

21,45

2,30

2,35

27,23

6,89

36,49

36,9

12,7

17,0

49,3

1.87:1

11,61

LFA-LOOP

Yes

2,81660762

*InnoV 38
LFA

15,41

21,45

2,59

2,56

27,26

6,33

35,85

36,9

12,7

17,0

49,3

1.87:1

11,72

LFA-LOOP

Yes

2,67951154

InnoV 40
LFA

16,23

21,67

2,69

2,66

27,67

7,46

37,02

37,8

12,6

17,2

48,0

2.27:1

11,99

LFA-LOOP

Yes

2,84880598

Only Antennas
that have actually been built are posted in these Tables

Thanks to
Vladimir, UR5EAZ for establishing the Interactive Mode in the 144 and 432
Tables

Thanks to
Hartmut,DG7YBN for his ongoing
support and many inputs to the Tables

Legend:

1. L= Length in Wavelengths

2. Gain= Gain in dBi of a single antenna

3. E= E plane (Horizontal) stacking in
Meters.

4. H= H plane (Vertical) stacking in
Meters.

5. Ga= Gain in dBi of a 4 bay array

6. Tlos= The internal resistance of the antenna
in degrees Kelvin.

7.
Ta= The total temperature of the
antenna or array in degrees Kelvin. This

includes all the side lobes,
rear lobes and internal resistance of the

antenna or array.

8.
F/R= Front to Rear in dB over the
rear 180 degrees of an antenna using either E or H plane.

9.
Z ohms = The natural impedence of a single antenna in free space.

10.
VSWR= VSWR Bandwidth is based a
single antenna over 432.000 - 435.000 MHz with a

reference at 432.300 MHz.
This parameter gives an indicator of the

antenna "Q" and
what to expect with with stacking and wet weather.

11. Ant
G/T= Figure of merit used to
determine the receive capability of the antenna

The VE7BQH G/T tables represent Antenna G/T (dB), in short G/Ta, found at the terminals of the sum of individual antennas shown. It is clear that in contrast the
Systems G/T as S/N in your headphones depends on the noise temperature and gain respectively loss in all following stages and even more so on the actual environments
noise intensity per direction in relation to beam direction and individual antenna pattern. And this closes the circle. Good S/N in your headphones starts with good
Antenna G/T. Since what is not delivered to the antenna terminals can never be made up by any PHEMT LNA and lowest loss coax nor smartest RX S/N ratio wise.
Mind that the best LNA betters the S/N of your RX_Line but contributes noise as function of its NF.

wherein G_System holds all gains and losses in the system starting with antenna gain and down to RX all stages gain. T_Rx_Line represents the sum of Noise Temperatures
from phasing coax lines down to RX. Further information on deriving T_ant and Antenna G/T can be found in the 'TANT Manual' and 'TANT Appendix' click .